Statistics for occurrence #1 of “Captain A. P. Mason” in chapter 1.27, section c.1.27.1, page 26 of Southern Historical Society Papers, Volume 35.:

...obert E. Lee was assigned to the command of the Army of Northern Virginia, and took with him his personal staff as above named, to-wit: Long, Taylor, Talcott, Venable and Marshall. He also retained Captain A. P. Mason , A. A. & I. General, of General Johnston's staff, who in March, 1863, was at his own request transferred elsewhere, and Major Walter H. Taylor assumed his duties. Colonel Thomas Jordan, A. A. &...
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